Kubernetes ingress: Cannot create service: subset not found

Traefik Traefik v2
1

Hi,

I am using traefik 2.2.8, installed from the official helm chart (v9.1.1), and I'm not able to create a kubernetes ingress that would work with Traefik. traefik pod logs gives me this:

level=error msg="Cannot create service: subset not found"

E V E R Y ingress object gives this. Validated that, for a specific one, the pod is in ready state, that there's the service object referred by the ingress.

I hhave no clue on how to solve it, and I wouldn't want to go back to traefik 1.8.x for which my ingresses work without any issue.

2

This error usually means that the service does not have active end points. There is also a possibly related issue.

3

Found out. I had to add these two lines:

traefik.ingress.kubernetes.io/router.entrypoints: websecure
traefik.ingress.kubernetes.io/router.tls: "true"

In the ingress annotations for Traefik to route correctly.

4

I'm getting this error when trying to test the ingress without TLS as well.

Traefik installed via Helm with helm install traefik traefik/traefik -n traefik -f traefik/args.yaml and these additional args:

additionalArguments:
  - "--providers.kubernetesingress.ingressclass=traefik"
  - "--providers.kubernetesingress.ingressendpoint.publishedservice=traefik/traefik"

Then a test chart to test the ingress with: helm create test, and the only change to the generated chart is:

ingress:
  enabled: true
  annotations:
    kubernetes.io/ingress.class: traefik
  hosts:
    - host: my.sub.domain
      paths:
        - path: '/'
  tls: []

However, when I deploy with helm install -n test hello-world ./test, I the specified host is inaccessible and I get this error from Traefik:

time="2021-01-07T00:56:37Z" level=error msg="Cannot create service: subset not found" namespace=test serviceName=hello-world-test providerName=kubernetes servicePort=80 ingress=hello-world-test
time="2021-01-07T00:56:37Z" level=error msg="Cannot create service: subset not found" namespace=test serviceName=hello-world-test servicePort=80 providerName=kubernetes ingress=hello-world-test
5

I just got this error as well on Kubernetes 1.23 and traefik 2.9.1.

My problem was a mismatch between the referenced service's.
service.spec.ports[0].targetPort and the actual service's deployment's:
deployment.spec.template.spec.containers[0].ports[0].name

This although kubernetes had no problem binding the pod to the service.

(edit: typo in kubernetes version)